633538-001 HP P420 6GB/s SAS RAID Controller PCIe Adapter 1GB FBWC + Battery LP

610673-003 HP Smart Array P420 Controller 633538-001 Low Profile / No Cache

610673-003 HP Smart Array P420 Controller 633538-001 Low Profile / 1GB Cache

HP 660093-001 Flash Backed Write Cache FBWC Battery for P420 and P421 US

633538-001 HP P420 6Gb/s SAS Controller Adapter PCIe3.0x8 with 1GB memory FBWC

HP Smart Array P420 Controller 633538-001 Low Profile/ 1GB Cache & Battery

HP Smart Array P420 Controller 633538-001 High Profile/1GB Cache & Battery

Lot of 2 HP P420 8 Ports 6Gbps SAS/SATA PCIe 3.0 x8 Raid Controller 1GB w/ BBU